OASIS Emergency Management TC

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RE: [emergency] EDXL-DE routing and valueListUrn

  • 1.  RE: [emergency] EDXL-DE routing and valueListUrn

    Posted 03-22-2006 00:12
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    Subject: RE: [emergency] EDXL-DE routing and valueListUrn


    Renato has it exactly right.  If the identifier resolves to a specific
    URL only, systems will have difficulty if the URL is down for any
    reason. But the party responsible for a URN can make the resource
    available in multiple ways, even sneaker net, if necessary (as is often
    done when crossing from unclassified to classified systems).  Ideally,
    you might want to associate a URN with a source URL, but only as an
    authoritative reference, because most of the time using the URL is just
    a lot of extra work retrieving a foreign source that could be kept
    locally.
    
    For the EDXL-DE, in particular, the value is in the URN as a unique
    identifier that tells me whether I know how to process the content or
    not.  If I don't know the URN, I cannot do specialized processing. If I
    do, I can. It is as simple as that.
    
    Respectfully,
    
    Gary A. Ham 
    Senior Research Scientist
    Battelle Memorial Institute
    540-288-5611 (office)
    703-869-6241 (cell)
    "You would be surprised what you can accomplish when you do not care who
    gets the credit." - Harry S. Truman